Fluid Power

The primary components and principles of fluid power systems allow industry and machinery to achieve a multitude of tasks. Although fluid power has been used throughout history, it is far from obsolete. In fact fluid power provides exceptional power advantages. Fluid power technologies impact areas from commercial farm machinery to respirator equipment used to provide oxygen to medical patients. Fluid power possesses some very important characteristics. Fluid power has a large amount of power per unit volume or mass. This is generally referred to as power density. Systems are able to multiply force. Another advantage is that fluid can change direction quickly without damaging a system. This allows engineers and designers to utilize flexible piping and hoses to transfer fluid in a variety of directions.


In this lesson you will be introduced to both pneumatic and hydraulic power. You will learn the basic components of each system and how they are designed to manipulate work and power. There is a strong connection to the lessons in Unit 1, regarding manipulating work and power.

K1 – Identify the advantages of hydraulic and pneumatic systems relative to each other. 
K2 – Identify and explain basic components and functions of fluid power devices. 
K3 – Distinguish between pressure and absolute pressure. 
K4 – Distinguish between temperature and absolute temperature. 

S1 – Identify devices that utilize hydraulic and pneumatic power. 
S2 – Distinguish between hydrodynamic and hydrostatic systems. 
S3 – Design, create, and test a hydraulic device. 
S4 – Design, create, and test a pneumatic device. 
S5 – Calculate design parameters in a fluid power system utilizing Pascal’s Law. 
S6 – Calculate values in a pneumatic system utilizing the ideal gas laws. 
S7 – Calculate flow rate, flow velocity, power, and mechanical advantage in a fluid power system. 



Vandegrift High School | 9500 McNeil Drive, Austin, TX | T: 512 570 2300 |  Andrew.Perrone@leanderisd.org

Notes and practice problems involving pressure, the ideal gas law and Boyle's Law